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RE: Comp ARF P-47 Sliding Canopy

Aw man, you had to bring that up. Actually its working fine now. I replaced the aileron servos with high-end digitals and the glitching went away, the flaps were always digital and never glitched (trend here). Then the glitching migrated into the elevator servos and rudder servo (analog). I replaced these with just a lower grade digital and the glitching stopped there too. THEN the PowerBox electronic ignition cutoff started cycling off and of course shutting the engine down. So I bypassed the electronic on/off switch, hard-switched the ignition and have been flying the plane since with no problem. I thought whatever is causing this is something that developed over time, something wearing, everything eliminated from consideration EXCEPT the extemely loose and rattling Robart tailwheel retract mechanism! So I did a rebuild on the retract mechanism, tightened it all up and as a joke plugged the PowerBox ignition switch back in. During the ground run it worked fine until I did a range test and at about 50 feet the electronic switch cycled off. I didn't have the foresight to see if the rest of the radio was still working but that was enough for me. I took the PowerBox back out of the loop and flew the plane 6 times with no issues. I think the retract mechanism tightening helped, it could be that the range test brought about the switch cycling...I don't know. But I do know that it works in its current configuration so I'm leaving it alone. By-the-way, I think the PowerBox stuff is top notch and will certainly use the electronic switch in another application like maybe my Robart P-47 with the Evo 80 (though I think the PowerBox may let too much voltage through for the Evo ignition).

RE: Comp ARF P-47 Sliding Canopy

Thanks guys, I have the 6 volt , 100mm unit .one servo.
I made a push rod that looks like a Y but as the top of the Y extends it get straighter .
Each end of the Y attaches to inside bottom of the canopy and simple pulls and pushes the canopy .
the steps I took were
1)cut rails on a drill press with a cutting wheel
2)made the canopy slide manually
3)added the linear servo with Y rod , its cheaper then going to two !!

RE: Comp ARF P-47 Sliding Canopy

Forgot to add , the pilot was an 8oz blue box pilot , his body was removed and rebuild from blue foam , servo was added in the chest area (mini servo).
Added the head , hands , feet , total weight 3.9oz , big savings and better pilot

RE: Comp ARF P-47 Sliding Canopy

No problem glad to help .FYI , as you problably know you can make a linear servo from servo city conversions , cheap but you dont get much linear movement , some guys also make "arm type movements " again cheap options .
On this EPO P40 I did not have the room in the fuse to play with a winch type set up , so the linear servo makes it all easy

RE: Comp ARF P-47 Sliding Canopy

THanks Pete !! Yes they are very smooth and very easy to set up vs air !!
I used air on my FW190 an it was very rough .
My ultimate goal is to get the pilots arm to move the canopy wheel but I did not know how to make the wheel turn in a gearing fashion